Clutch.



No. 679,744. Patentd Aug.v s, 190|.,l

a. n. souennoun.

CLU-TCH.

(Applcatl'op led Dec. B, 1900.)

(No Model.)

[0., VIII/III',

UNITED STATES PATENT OEEICE.

GEORGE R. GOUGHNOUR, OF MIDDLEBRANCH, OHIO, ASSIGNOR OF. ONE- HALF TO EZEKIEL DAVIDSON, OF CANTON, OHIO.

CLUTCH.

SPECIFICATION forming part of Letters Patent No. 679,744, dated August 6, 1901. Application filed December 6, 1900. Serial No. 38,860. (No model.)

T0 ctZZ wtont it may concern:

Be it known that I, GEORGE R. GOUGHNOUR, a citizen of the United States, residing at Middlebranch, in the county of Stark and State of-Ohio, have invented new and useful Improvements in Clutches, of which the following is a specification.

My invention relates to improvements in clutches; and it consists in providing an adjustable gripping-band to engage a cylindrical rim or flange upon a revolving drum or pulley and a driver keyed upon the shaft and engaging the gripping-band and means for holding the band in position upon the flange of the revolving drum or pulley and engaging the same therewith, as will be hereinafter more fully described and claimed.

In the accompaning drawings similar letters of reference refer to similar parts.

Figure l is a perspective View of my invention. Fig. 2 is a sectional View through the shaft and driver. Fig. 3 is aperspective view of the coupling-block by which the ends of the gripping-hand are coupled. Fig. 4 is. a perspective view of the operating-lever. Fig. 5 is a perspective view of one end of the griping-band. Fig. 6 is a perspective view of the opposite end of the gripping-band. Fig. 7 is a perspective view of the retaining-block by means of which the coupling-block illustrated in Fig. 3 is held in engagement with' the end of the gripping-hand. Fig. 8 is a longitudinal sectional View through the coupling-block and gripping-hand. Fig. 9 is a sectional view through a a. Fig.10 is a sectionalview through the line X X. Fig. 1l is a sectional View through the line Y Y.

The driving-pulley or idler A is loosely mounted on the shaft B, which may be journaled in any of the well-known ways. Projecting from and attached to the spokes of the driving-pulley there is provided the annular flange C, which may be either cast integral with the driving-pulley or attached thereto. Carried upon the annular'flange C, I provide a gripping-band D, which is made of metal and may be provided on its inner side with a friction-hand of any desired material. The ends of the gripping-band do not meet, and a small space intervenes between the ends. In one end there is provided a square aperture or opening d. On the other end and securely engagin g the same there is provided a rectangular metal block d,which engages the couplingblock E, which consists of a metal bar having 5 5` at one end a projecting lug e, provided with a screw-threaded aperture c', and at the other the slotted projecting lug e2, provided with a circular aperture e3, extending therethrough. Between the projecting lug e and e2 there is 6o provided the slotted aperture e4, equal in width to the block d upon the end of the gripping-band, over which it is adapted to slide and to be held in position by the retainingblock d2, which is securely bolted to and through the end of the gripping-band and the block d. The operating-lever F is adapted to be mounted in the slotted projecting flange c2 in the coupling-block E and is held in engagement therewith by means of a pin or bolt 7o passing through the aperture e3 and a corresponding aperture f in the forward end of the operating-lever. The forward end of the operating-lever is adapted to and does engage with the square aperture d in the end of the gripping-band. In the screw-threaded aperture e' in the projecting ilange e of the coupling-block E, I provide a screw-threaded adjusting-bolt e5, the inner end of which impinges against the retaining-block d2 and by 8o means of which the distance between the ends of the retaining-band may be adjusted. The driver G is adapted to have a keyed engagement with the driving-shaft B and is provided at its upper end with a projecting arm or S5 flange g, which engages with a pin d3, projecting from or through the gripping-band D. Upon the shaft B there is provided a sliding collar H, which has a splined engagement with the shaft and is operated by means of the 9o hand-lever I, which may be of any of the wellknown forms. Mounted upon the driver G there is provided the pivotal link g2, which is connected to or with the sliding collar H by means of the link g3 and to the operating lever 95 F by means of the link g4.

In Voperation the hand-lever is moved forward, carrying backward the sliding collar, which in turn communicates the motion to the operating-lever F, drawing the same down roo and forcing the ends of the gripping-band together, thus engaging tightly the grippingband with the annular iiange, and the motion of the shaft is imparted to the driving-pulley A. To reverse the operation, the hand-lever is moved in the opposite direction. The operating-lever causes the end of the grippingband to be released, and the gripping-band is thus disengaged from the annular flange, and the driving-pulley remains stationary. In case it is desired to adjust the ends of the gripping-band in theirrelation to each other and to the pressure which they shall exert upon the annular flange the 'adjusting-bolt e5 can be moved forward or backward, thus producing the desired result.

I am aware that friction or gripping bands have heretofore been employed to engage with annular flanges mounted upon driving-pulleys; but theyhave never heretofore extended clear around said flange and have been either formed of two parts or when of a single pieceY have been spaced apart, so as to lose a large portion of the gripping power, and have been operated by means of the well-known togglelever and other complicated appliances, by means of which alarge portion of the gripping- Y power of the band was lost and complicated appliances were necessary to operate the mechanism.

There may be various modifications of the form of the device which I have shown without departing from the spirit of my invention, which consists, primarily, in providing practically a continuous friction-band adapted to be mounted upon and engage with an annular-projecting flange of the drive-wheel and means for contracting and expanding the same, as herein shown and described.

Having thus fully described my invention, what I desire to secure and claim by Letters Patent is- A l. The combination in a friction-clutch, of a loose pulley provided with a projecting cylindrical lian ge,with a metallic gripping-band embracing the outer surface of the flange and carried by the driving member, an adjustable coupling-block carried on the ends of the band and means for expanding and contracting said band, substantially as described and for the purpose set forth.

2. The combination in a friction-clutch, of a loose pulley mounted upon a shaft and provided with a projecting cylindrical ange, with a metallic gripping band extending around the outer surface of the flange, and ,carried by the driving member, an adjustable coupling-block :carried on the ends of the band, an operating -lever mounted on the coupling-block, and means for operating the same, substantially as described and for the purpose set forth.

3. A friction-clutch consisting of a loose pulley mounted upon a shaftv and provided with a 'projecting cylindrical flange, a metallic gripping-band extending around substantially the entire outer surface of said flange, an adjusting coupling-block carried upon and uniting the ends of the band, an operatinglever pivotally mounted in one end of the coupling-block, and engaging one end of the band, a driving-arm keyed to the shaft and engaging't'he gripping-band, a sliding collar mounted uponthe shaft, ahand-lever engaging the collar, and a linked connection between the collar and the operating-lever, substantially as described and for the purpose set forth.

In testimony whereof I have hereunto set my hand in the presence of two subscribing Witnesses:

E. A. DAVIDSON, CHAs. R. MILLER. 

